Directed Electronics Viper Audio d300.1 Kullanıcı El Kitabı - Sayfa 12

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CROSSOVER SETTINGS AND GAIN ADJUSTMENT

Your Viper Audio power amplifier needs to be adjusted carefully to achieve maximum

performance. These are some guidelines to follow when fine-tuning the amplifier.

Because this amplifier is only designed for subwoofer applications, the low-pass

crossover is active at all times. The crossover point is adjustable to allow more

precise system operation.

Try and keep the setting low enough to prevent image smearing (you should not

be able to hear male voices from the subwoofer) but not so low as to create a gap

between the subwoofer and the mid-bass/midrange speakers. It will be to your

advantage to spend some extra time with this adjustment, listening to familiar

music or system set-up discs to achieve the kind of musical reproduction that you

prefer.

The gain adjustment allows you to set proper signal match for clean, quiet ampli-

fier operation. Start by playing some music you are familiar with. With the gain

adjustment on the amplifier in the middle of its rotation, bring up the volume on

your head unit to the 3/4 volume setting or until you start to hear distortion or

clipping. If you hear distortion before you reach the 3/4 volume setting of your

head unit, reduce the gain setting on the amplifier and start to raise the head unit

volume again. When you can listen to the music at or slightly above 3/4 on your

head unit without audible distortion, slowly raise the gain of the amplifier until

distortion is heard, then back off the gain until the distortion is not audible. This

setting will allow you to reach full output with all but the quietest of source mate-

rial, while avoiding excessive noise in the system.

For systems using the Remote Sub Level Adjustment, increase the subwoofer gain

on the amplifier by 25% and set the Remote Sub Level knob to the center position

after making all system gain and filter adjustments. This will give the Remote Sub

Level Control a wider range of adjustment to the subwoofer output.

You should take into consideration the effect that gain adjustment has on system

frequency response and staging. Again, plan on spending some time with music

that you know getting the gain and crossover settings the way you like. Test discs

and analyzers may help with this process, but in the end it's your ears that count

--listen to the music!